So far, I have experience with two different methods of attaching a simple (i.e., one piece, no stand) collar. The method illustrated above uses the collar to hide the raw edges of the center front facing.
The method below uses the center front facing to hide the raw edges of the collar.
I prefer the first method - although that could be just because I have more experience with it and can get it to work out nicely pretty much every time. I haven't used the second method as often, so it still feels awkward and doesn't always come out looking good.
How about you? Have you used both methods? Are there other methods that you have used as well? Do you have a preference? If so, what is it and why do you like it? I'm looking forward to hearing about your experiences "being collared." ;)